1995 Oldsmobile Achieva Must turn over engine 5-8 times to

Chances are there is a leak in the system that allows the fuel pressure to drop off when you shut the key. Here is a how to for checking pressure and fuel pressure drop off. Give it a try paying close attention to how quickly the pressure drops off when the key is shut.

You will need a gauge to check this, but most parts stores will lend or rent them. If you can't find one, they sell them from this site at great prices.

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm

Let me know what you find.
Joe